Smoking pipe



July 9, 1957 J, LAVERTY 2,798,497

SMOKING PIPE Filed NOV. 29, 1955 e-qlgkl INVENTOR.. J0///V ZAVEPZY WWW.

ATTORNEY United States Patent SMOKING PIPE John J. Laverty,Philadelphia, Pa.

Application November 29, 1955, Serial No. 549,692

2 Claims. (Cl. 131215) This invention relates to smoking pipes, andparticularly to a smoking pipe so constructed as to trap nicotinicjuices and saliva during smoking and thus prevent the unpleasantinhalation thereof.

Anyone who has ever smoked a pipe has experienced at some time theunpleasantness of suddenly getting a mouthful of ill-tasting nicotinicjuices from the smoking tobacco. In addition, saliva commonly collectsin the pipe stem and is often withdrawn therefrom into the month whileinhaling. These unpleasant circumstances can be prevented by proper pipedesign.

With the above in mind, it is the basic objective of the presentinvention to provide an improved smoking pipe.

It is another object of this invention to provide an improved smokingpipe with a removable sump or trap adapted to collect the nicotinicjuices and saliva during smoking, and thus prevent the tasting thereofby the smoker.

It is a further object of this invention to provide an improved smokingpipe with a removable sump which is capable of easy disassembly forcleaning purposes.

Another object of this invention is to provide an improved smoking pipewith a removable sump which is mounted in a removable plug contoured soas to blend with the external contour of the pipe.

A still further object of the invention is to eliminate the wet heeloften formed in the ordinary pipe bowl and which causes offensive odorsand objectionable tastes to the user.

These objects, together with other objectives and advantages to bederived from the present invention, will at once become apparent fromthe following detailed description and accompanying drawing, whereinsimilar numerals refer to similar parts throughout the several views.

Figure 1 is a side elevational view of a smoking pipe made in accordancewith the present invention.

Figure 2 is a vertical cross-sectional view of the smoking pipe of Fig.1 showing the internal structure thereof, and illustrating the removabletrap or sump in elevation.

Figure 3 is a cross-sectional view of the forward end of the smokingpipe, as shown in Fig. 2, but with the removable sump and the plug inwhich it is mounted shown in cross-section and in exploded relationship.

Turning now to the drawing, the smoking pipe of the present invention isshown in its entirety in Fig. 1 and referred to therein by the letter P.The pipe P is constructed in two main pieces, and includes a bowlportion 10, and a mouthpiece 11 of conventional construction. Projectingforwardly from the bowl portion and re movably receiving the mouthpiece11 is a stem 12. The bowl portion 10 is provided with a tobacco-holdingchamber 13 which extends from a point within the bowl portion to itsuppermost free end 14. Communicating with the chamber 13 and extendingdownwardly in a forward direction therefrom into the stem 12 is aninclined passageway 15 which connects with a draft bore 16 in theforward end of the stem 12. It is in the end of the draft bore 16 thatthe mouthpiece 11 is slidably received, as shownvin Fig. 2. Extendingdownwardly in a rearward direction toward the bowl 10 is asump-receiving passageway 17 which at its forward end merges with theinclined passageway 15. The passageways 15 and 17 are angularly disposedwith respect to (one another and also with respect to the draft bore 16.The rear end of the passageway 17 opens into a plug-receiving notch 18in the base of the bowl 10, as shown in Fig. 3. The notch 18 is undercutas at 19 in Fig. 3 for a purpose to be described below. At a pointadjacent to the point of merger of the passageways 15 and 17, the bottomwall of the stem 12 is provided with a peak 20 projecting into the bore16 and acting as a baffle with respect to juices tending to flow intothe bore 16.

Within the passageway 17 is a cylindrical sleeve 21 which is ordinarilypermanently fixed in place. The sleeve 21 is preferably made from asuitable metal, such as brass or the like, in contrast with the briarconstruction of the pipe, and is adapted to slidably receive therewithina trap or sump 22, as shown inFigs. 2 and 3. The sump 22 is preferablymade from metal tubing, and has a cut-out portion in its forward end toprovide a scoop 23 which ordinarily lies adjacent the point of merger ofthe passageways 15 and 17 for a purpose to be described below. The rearend of the sump is tapped, and the sump is threadably attached to athreaded stud 24 which is anchored in a plug 25, as in Fig. 3%. The plug25 is preferably made from the same material as the pipe bowl, and iscut to fit the notch 18 in the base of the bowl. The portion of the plug25 which is ordinarily exposed when the plug resides in the notch 18 iscontoured to blend with the external contour of the bowl 10, to berelatively unnoticeable. In addition, the plug 25 is undercut as at 26to correspond with the undercut 19. To facilitate the grasping andremoval of said plug, indentations 27 are provided in the opposite sidesthereof, as shown in Figs. 1 and 2.

Operation In assembling the present smoking pipe, the sump 22 is firstthreadably attached to the stud 24 anchored in the plug 25. The saidplug and sump are inserted into the notch 18 of the bowl 10 so that thesump slides into the sleeve 21 in the passageway 17, with the scoop 23of said sump immediately adjacent the point of merger of the passageways15 and 17, as shown in Fig. 2. The mouthpiece 11 is then inserted intothe draft bore 16 in the end of the stem 12. The pipe is now ready forsmoking.

To discard the collected nicotinic juices and saliva, one need merelygrasp the plug 25 at the finger indentations 27 and withdraw the plugand sump from the pipe by exerting a pull thereon. A mere flick of thewrist will then eject the collected debris therefrom. Should it becomedesirable or necessary to clean the sump 22, said sump may be detachedfrom the stud 24 by unscrewing and cleaned with a conventional pipecleaner.

The smoke as it leaves passage 15, enters an expansion chamber beforereaching the peak 20. As the smoke expands therein it will give up heat;as is common in refrigeration systems. The loss in heat will result inthe condensing of the moist matter in the smoke, which will flow throughthe passage 17 into the sump.

It is this expansion-refrigeration action, which extracts the liquidfrom the smoke and the passage 17 conveys that liquid to the sump, fromwhich it can be discharged when convenient.

It will be noted that the sleeve 21 prevents wear of the briar of thepipe due to repeated withdrawal of the sump 22, whilethe cutback 19provides a seat for the A plug 25 and preventsthe plug frominadvertently slipping out of the notch 18. By virtue of the fact thatthe outer surface of the plug 25 is contoured to blend with the surfacecontour of the bowl 10, it detracts but little from the aesthetic appealof the pipe. In fact, with rough surfacing as is found inmanypresent-day pipes, the plug 25 can go undetected.

While the present discussion of this invention-has been limited to theabove-described preferred embodiment, variations thereof are possiblewithout departing from the. spirit of the invention. It is to beunderstood, therefore, that the invention is .not to be limited to theparticular embodiment disclosed, but rather only to the m ventiveconcept asdefined by theappended claims.

What is claimedis: I

1. In a smoking mouthpiece, ber therein,

pipe having a bowl, a stem and 'a' said bowl-having a tobacco receivingchama smoke duct in said stem connecting the bottom of the tobaccoreceiving chamber Withan expansion chamber intermediate of the stem,said duct being downwardly and inwardlyinc'lined toward said expansionchamber, a second duct leadingdownwardlyfrom said expansion chamberto-asump located below the tobacco chamber and outwardly of the'stem, saidsump having a removable plug having a sleeve attached thereto, the plugconforming-w-ith the outer contour of the pipe bowl, said expansionchamber converging inwardly of the pipe, the inner end portion of theexpansion chamber terminating in a baflle having a downwardly inclinedportion in said stem, said stem having a horizontally disposed boreinwardly of said expansion chamber adjacent said inclined portionadapted to receive the outer end of the mouthpiece, whereby smoke may bedrawn from the bowl to expand in the expansion chamber and be cooledthereby and therein, condensing the moist matter in the smoke to permitthe condensed matter to flow downwardly and outwardly into said sump.

2. The pipe as recited in claim 1 wherein said sleeve is detachablyattached to said plug.

References Cited in the file of this patent UNITED STATES PATENTS,

